Very Strange Connection Issue

[7ungmin]

I live in a hotel/apartment that provides internet connection for the tenants, they have no ISP or admin so I cannot contact for IT assistance and the hotel management is helpless about this.

So my problem persisted when I replaced a borrowed modem with a exact same new modem (Thomson tg585 v7). My new modem will not identify dsl connection nor internet.
But when I plug my hp laptop straight into to the phone jack it identifies the previous modem's LAN network.
Laptop is the only device that identifies it, for my desktop it comes out as unidentified network.

Laptop:
Connection-specific DNS Suffix: hia.co.nz
Description: Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20)
Physical Address: ‎00-1E-EC-A2-FA-6B
DHCP Enabled: Yes
IPv4 Address: 10.1.6.138
IPv4 Subnet Mask: 255.255.255.0
Lease Obtained: Sunday, April 29, 2012 2:34:26 PM
Lease Expires: Sunday, April 29, 2012 2:54:26 PM
IPv4 Default Gateway: 10.1.6.1
IPv4 DHCP Server: 10.1.6.1
IPv4 DNS Servers: 116.193.151.199, 116.193.151.229
IPv4 WINS Server:
NetBIOS over Tcpip Enabled: Yes
Link-local IPv6 Address: fe80::4858:1c47:a3d9:43b%11
IPv6 Default Gateway:
IPv6 DNS Server:

I've tried /release /renew, flush dns and everything but it seems like the problems is persisting from the other side

 

[sk1939]

The new modem doesn't identify the internet because the authentication settings with the ISP are different from what is tied to that line.

 

[7ungmin]

Is there a way change the authentication setting from my side? or does it have to be done by ISP?

 

[sk1939]

You need to contact the ISP for that. You can change it yourself, but as to what you need to change it to, that is what you need the ISP for.